FIT File Tools
A complete set of free, browser-based tools for working with Garmin FIT files. Your data never leaves your device — everything runs locally in your browser.
FIT File Viewer & Analyzer
Upload your .fit file to instantly view heart rate, power, cadence, elevation, and GPS data with interactive charts. Works with files from Garmin, Wahoo, Suunto, and all ANT+ devices.
Select FIT file →FIT File Editor
Trim, cap, and adjust your FIT file data without installing software. Fix erroneous spikes, remove warmup sections, or crop your activity to the exact segment you need.
Select FIT file →FIT File Converter
Convert your Garmin FIT files to GPX, TCX, or CSV in seconds. Select exactly which fields you need — GPS, heart rate, power, cadence, elevation, and more.
Select FIT file →FIT File Repair Tool
Got a corrupted FIT file? Upload it here and we'll diagnose the issues — timestamp gaps, GPS spikes, CRC errors — and fix them automatically. Your data stays in your browser.
Select FIT file →Merge FIT Files
Combine multiple FIT files into a single activity. Perfect for split recordings, multi-sport events, or sessions where your device stopped mid-activity.
Select FIT file →